I highly recommend Natthapol's apartment. The apartment itself is very modern and well taken care of, it has all of the fixings that one would need for a short or long term stay. It is in a nice building, which is set back from the main road and thus muh quieter than many other buildings located directly on the main road. The building has a great amenities floor, with a nice gym, play area for kids and a big pool. The building is located halfway between BTS Ari and Saphan Khwai, and there are regular shuttles to both BTS stops as well to the main road. It takes about 15 minutes to walk to each BTS stop, and about 5 min to walk to the main road.
Natthapol was by far one of the best hosts on Airbnb and he goes to great lengths to make sure the guests at his apartment have a good stay. He regularly checked in with me to make sure my stay was going well and to see if I needed anything. He was extremely friendly, helpful, communicative, and all in all a great host!